Wrap isActivatedSubmit() in WebFormControlElement

Wrap isActivatedSubmit() in WebFormControlElement

This is related refactoring old Blink code, specifically moving functions in
WebPasswordFormData and WebPasswordFormUtils into chromium side. Inevitably,
HTMLFormControlElement.isActivatedSubmit() that is called in WebPasswordFormData
needs to be exposed to chromium side.

R=gcasto@chromium.org, tkent@chromium.org
BUG=

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=171571

[Garrett Casto, 2014-04-11 20:26:53]

I don't think that this is necessary. This data is already exposed via
WebInputElement::isActivatedSubmit().

[ziran.sun, 2014-04-14 10:10:58]

On 2014/04/11 20:26:53, Garrett Casto wrote:
> I don't think that this is necessary. This data is already exposed via
> WebInputElement::isActivatedSubmit().

Just wondering - the submit element can only be Input element? The original code
in WebPasswordFormUtils.cpp checks on FromControlElement type. This makes me
think that the submit element could also be other types of element, e.g. button
element? Do let me know if I missed anything.

[tkent, 2014-04-14 23:08:06]

Yeah, <button type=submit> can be an activated-submit button.

We should remove WebInputElement::isActivatedSubmit in this CL.

[Garrett Casto, 2014-04-14 23:24:03]

On 2014/04/14 23:08:06, tkent wrote:
> Yeah, <button type=submit> can be an activated-submit button.
> 
> We should remove WebInputElement::isActivatedSubmit in this CL.

I stand corrected.

[ziran.sun, 2014-04-15 12:35:04]

Updated code as per discussions. Please review. Thanks!

[tkent, 2014-04-15 12:59:19]

lgtm

[commit-bot: I haz the power, 2014-04-15 12:59:38]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/ziran.sun@samsung.com/234803004/20001

[commit-bot: I haz the power, 2014-04-15 14:06:12]

Change committed as 171571